| 26 | CAREWELL WATER TECHNOLOGIES PRIVATE LIMITED - U41000TN2013PTC091271 |
| 27 | CASPIAN WATER (CHENNAI) PRIVATE LIMITED - U41000TN2002PTC049033 |
| 28 | CEEBEER TOYAM INDIA PRIVATE LIMITED - U41000TN2013PTC090412 |
| 29 | CHEMTECH SYSTEMS PRIVATE LIMITED - U41000TN2004PTC053791 |
| 30 | CHENNAI INDUSTRIAL WATER UTILITY COMPANY LIMITED - U41000TN2005PLC056294 |
| 31 | CHENNAI WATER DESALINATION LIMITED - U41000TN2005PLC057212 |
| 32 | CHENNAI WATER TECHNOLOGIES PRIVATE LIMIT ED - U41000TN2002PTC048596 |
| 33 | CHHOTAGOVINDPUR AND BAGBERA DRINKING WATER SUPPLY PROJECT LIMITED - U41000TN2015PLC100519 |
| 34 | CLEAR AQUA TECHNOLOGIES PRIVATE LIMITED - U41000TN2005PTC057422 |
| 35 | COIMBATORE COMMON POLLUTECH PRIVATE LIMITED - U41000TZ2000PTC009571 |
| 36 | COSMOS PURIFICATION SYSTEMS PRIVATE LIMITED - U41000TN2012PTC086590 |
| 37 | COUNTER MEASURES TECHNOLOGIES PRIVATE LIMITED - U41000TN2008PTC067298 |
| 38 | DEW WATER AND WASTE WATER TREATMENT PRIVATE LIMITED - U41000TN2006PTC059847 |
| 39 | DOLPHIN WATERTECH PRIVATE LIMITED - U41000TN2005PTC058324 |
| 40 | DURA WATER TECH PRIVATE LIMITED - U41000TN1999PTC041731 |
| 41 | ECO MAXET INDIA PRIVATE LIMITED - U41000TN2015PTC100206 |
| 42 | ECO PROTECTION ENGINEERS PRIVATE LIMITED - U41000TN2009PTC072382 |
| 43 | ECO-CHEM LABORATORIES PRIVATE LIMITED - U41000TN2004PTC054671 |
| 44 | ECOVIVE INFRA LIMITED - U41000TN2011PLC079723 |
| 45 | ELENJIKAL WATER TECHNOLOGIES (CHENNAI) PRIVATE LIMITED - U41000TN2002PTC049881 |
| 46 | ELPAR ENTERPRISES PRIVATE LIMITED - U41000TN2004PTC054839 |
| 47 | ENAGIC INDIA KANGEN WATER PRIVATE LIMITED - U41000TN2015PTC100366 |
| 48 | ENTRICKS FILTECH PRIVATE LIMITED - U41000TN2017PTC120203 |
| 49 | ENVIRO ENGINEERING AND CONSTRUCTION PRIVATE LIMITED - U41000TN2016PTC104135 |
| 50 | ENVIRO PURE AQUA SYSTEMS PRIVATE LIMITED - U41000TN2005PTC057740 |